Harmonic Correction Unit

Active Harmonic Filters (Harmonic Correction Units — HCU) provide dynamic harmonic correction by actively injecting equal and opposite currents into the customer’s electrical distribution system that cancel the entire spectrum of harmonic currents at the point of connection. Typical applications include locations with large amounts of non-linear loads including 6- and 12-pulse PWM AC variable frequency drives, DC drives, as well as other switch-mode power supply equipment.